Fountain pen



FIG. 1 is a right front perspective view of a fountain pen showing mynew design;

FIG. 2 is an exploded right front perspective view thereof, with the capremoved to expose the conventional nib element;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevation view, the left side being a mirrorimage thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevation end view thereof; and,

FIG. 7 is a right side elevation end view thereof.

The ornamental design for a fountain pen, as shown and described.